// Copyright (c) 2024, Sispop StableCoin Protocol
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
//    materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
//    used to endorse or promote products derived from this software without specific
//    prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Portions of this code based upon code Copyright (c) 2019, The Monero Project

#pragma once
#include "common/pod-class.h"

#include <openssl/bio.h>
#include <openssl/crypto.h>
#include <openssl/ecdsa.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <openssl/ssl.h>

#include <cstdint>
#include <string>
#include <cstring>

#include "cryptonote_config.h"
#include "crypto/hash.h"

namespace epee
{
  namespace serialization
  {
    class portable_storage;
    struct section;
  }
}

namespace oracle
{
#pragma pack(push, 1)
  POD_CLASS pricing_record_pre
  {
    uint64_t sISPOPUSD;
    uint64_t sISPOPRSV;
    uint64_t timestamp;
  };
#pragma pack(pop)
  class pricing_record
  {

  public:
    // Fields
    uint64_t spot;
    uint64_t moving_average;
    uint64_t stable;
    uint64_t stable_ma;
    uint64_t reserve;
    uint64_t reserve_ma;
    uint64_t timestamp;
    unsigned char signature[64];

    // Default c'tor
    pricing_record() noexcept;
    //! Load from epee p2p format
    bool _load(epee::serialization::portable_storage &src, epee::serialization::section *hparent);
    //! Store in epee p2p format
    bool store(epee::serialization::portable_storage &dest, epee::serialization::section *hparent) const;
    pricing_record(const pricing_record &orig) noexcept;
    ~pricing_record() = default;
    bool equal(const pricing_record &other) const noexcept;
    bool empty() const noexcept;
    bool verifySignature(const std::string &public_key) const;
    bool has_missing_rates() const noexcept;
    bool valid(cryptonote::network_type nettype, uint32_t hf_version, uint64_t bl_timestamp, uint64_t last_bl_timestamp) const;

    pricing_record &operator=(const pricing_record &orig) noexcept;
    uint64_t operator[](const std::string &asset_type) const;
  };

  inline bool operator==(const pricing_record &a, const pricing_record &b) noexcept
  {
    return a.equal(b);
  }

  inline bool operator!=(const pricing_record &a, const pricing_record &b) noexcept
  {
    return !a.equal(b);
  }

  class pricing_record_v1
  {

  public:
    uint64_t SISPOPUSD;
    uint64_t SISPOPRSV;
    uint64_t timestamp;

    bool write_to_pr(oracle::pricing_record &pr)
    {
      pr.spot = 0;
      pr.moving_average = 0;
      pr.stable = 0;
      pr.stable_ma = 0;
      pr.reserve = 0;
      pr.reserve_ma = 0;
      pr.timestamp = 0;
      std::memset(pr.signature, 0, sizeof(oracle::pricing_record::signature));
      return true;
    };

    bool read_from_pr(oracle::pricing_record &pr)
    {
      SISPOPUSD = 0;
      SISPOPRSV = 0;
      timestamp = 0;
      return true;
    };
  };

} // oracle